When running my program, QImageWriter::supportedImageFormats() doesn't contain the jpg format. The VS debugger output tells me the following:
'my.exe': Loaded 'D:\pathtoexe\imageformats\qjpegd4.dll', Cannot find or open the PDB file
'my.exe': Unloaded 'D:\pathtoexe\imageformats\qjpegd4.dll'
This tells me that the paths are ok. I verified that all the Qt DLLs I'm using (core, gui, xml, opengl) are version 4.7.1 (File properties in Windows Explorer). What else could be the problem? Why is the DLL unloaded?
Edit: When setting QT_DEBUG_PLUGINS to 1, I get an error message mentioning a faulty side-by-side configuration (original message in German). I'm on Windows 7 btw.
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